<div class="filter">
    <div class="item f1"><input type="text" placeholder="用户名" /></div>
    <div class="item f2"><button>查询</button></div>
    <div class="clear"></div>
</div>
<div class="info">
</div>

<div class="buttons">
    <ul class="am-avg-sm-2">
    <li class="select"><a href="#">选择</a></li>
    <li><a href="javascript: void(0)" data-am-modal-close>取消</a></li>
    </ul>
</div>